var browser = navigator.userAgent;
var ie = 0;
if (browser.indexOf('MSIE') != -1 && browser.indexOf(') ') == -1) ie = parseFloat(browser.substring(browser.indexOf('MSIE')+4));

var id_status_blink = 0;
function status_blink(txt)
{
   window.status = txt;
  if (!txt) id_status_blink = setTimeout('status_blink("KLIKNIJ WEWNĄTRZ OKNA PRZEGLĄDARKI !!!!!")', 250);
  else id_status_blink = setTimeout('status_blink("")', 1500);
  return true;
}

function blur_ie()
{
  document.all['body'].style.visibility = 'hidden';
  clipboardData.clearData();
  status_blink("");
}

function focus_ie()
{
  document.all['body'].style.visibility = 'visible';
  if (id_status_blink) clearTimeout(id_status_blink);
  window.status = '';
  return true;
}

if (ie >= 5)
{
  window.onblur = blur_ie;
  window.onfocus = focus_ie;
}